Creating a new job with a repo which is served over https and requires http
authentication fails, hudson just sits there and waits for a password to be
entered on the controlling terminal.

I have a setup where the authentication credentials are supplied in a .netrc.
This worked until I upgraded the git plugin (nothing else changed)

This does not affect jobs where the repo has been cloned already and is just
updated.

It works if I clone the repo manually on the machine into the workspace
directory and then run the job (configuration of the job not touched).